7. d4b3  7... f8e7  8. h1g1 [%c_effect g1;square;g1;type;Interesting;persistent;true] An interesting and fresh move. Usually White prepares the advance of the g-pawn with f3 or even h3. 8... b7b5 This move has been played just once previously. 9. g2g4 A normal reply, but White has two interesting alternatives.